Smoke Alarms and Carbon Monoxide Detectors: Small Devices, Strict Duties

Detector rules are the easiest habitability requirements to verify and among the most consequential to ignore. The duties are the landlord’s, the checklist is short, and the paper trail protects your family.

What California Law Says

The Health and Safety Code requires operable smoke alarms in each sleeping room and hallway per building standards, and carbon monoxide detectors in units with fuel-burning appliances or attached garages — installed and maintained by the owner, with tenants responsible for reporting failures and not disabling devices.

How to Protect Yourself, Step by Step

1. Count and test devices at move-in: each bedroom, hallways, each level, CO units where gas appliances or garages exist.
2. Report missing or dead devices in writing and photograph the gaps.
3. Give the landlord the statutory chance to fix; then repair-and-deduct — detectors are cheap and safety-tier.
4. Never remove batteries or disable devices; report nuisance alarms instead.
5. Keep the file — after any fire or CO event, your reports define the liability.

Common Questions

My CO detector chirps and the landlord keeps saying next week. Options?

Written notice, then replace it yourself and deduct — a 30-dollar device is exactly what repair-and-deduct exists for.

Are detectors really a habitability issue?

Yes — code-required safety equipment failures are substandard conditions, and they carry outsized weight with inspectors and judges alike.